Saw my boss's wife at a club in Hackney on Friday. We pretended not to see each other

Saw my boss's wife at a club in Hackney on Friday. She was on the lower floor near the bar with a guy who very much was not my boss. I was upstairs on the mezzanine with my partner. We made eye contact for maybe half a second. She turned away. I turned away. We left twenty minutes later through the side exit specifically to avoid the staircase she was on. Monday morning 8:45am I'm sat in a quarterly review with my boss running the meeting. He's perfectly normal. She's perfectly normal in the photo on his desk. I do not know what to do with this information for the rest of my career. We've been going to that club for about four years. It's the only somewhat upmarket place in east London that we trust. Not changing venues. She and I are not friends — met at two work Christmas parties and once at a barbecue. Polite, distant. The question isn't do I tell him — obviously I don't. The question is does she know I saw her, will she now move first to control the situation, and how do I handle it if she pulls me aside at the next work thing?